Laminated Lens Structure Recessed Buffer for Resin Exudation
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Solution Overview
Problem
The existing method for molding lens arrays using light curing resin and a transfer body often results in resin exudation due to capillary action, leading to uneven surfaces and defects during lamination.
Innovation Solution
A laminated lens structure is designed with a substrate having an opening part and a recessed area where the lateral face of the opening part intersects the substrate surface, acting as a buffer to prevent resin exudation, and a manufacturing method involving sealing, filling, and hardening the resin within these structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a transfer body is brought into contact with light curing resin for lens molding, then the resin can be deformed according to the transfer geometry, but the resin exudes due to capillary action causing surface unevenness
Solution Approach 1:
A recessed part is formed in advance at the position where the lateral face of the opening part and the substrate surface intersect, before the lens molding process. This recessed part acts as a buffer to prevent resin from reaching the substrate surface during molding, thereby eliminating the harmful effect of resin exudation while maintaining the molding precision
Solution Approach 2:
The recessed part serves as an intermediary structure between the opening part and the substrate surface. It provides a buffer zone that intercepts the resin flow, preventing direct contact between the exuded resin and the substrate surface, thus resolving the contradiction between molding precision and resin exudation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively prevents resin oozing during lens molding, ensuring even surfaces and accurate lamination of lenses, reducing defects and errors in the lens array.
Implementation Method 1
there is a problem that when the transfer body is brought into contact with the light curing resin, the light curing resin would be exuded due to a capillary action
Data Source
AI summary
To prevent the resin from oozing out during the lens molding due to the capillary action. A laminated lens structure according to the present disclosure includes: a plurality of lens structures including a substrate provided with an opening part, a lens inserted into the opening part to be fixed to the substrate, and a recessed part provided at an area in which a lateral face of the opening part and a surface of the substrate are intersected, and recessed more than the surface of the substrate. The lenses are arrayed in an optical axis direction by the substrates being joined. This configuration makes it possible to prevent the resin from oozing out during the lens molding due to the capillary action.